Band tightening tool



Oct. 20, 1931. Q A. H. MOON BAND TIGHQ ENING TOOL Filed Jan. 18, 1928 I5Sheets-Sheet l BYM 7 ATTORNEYS Oct. 20, 1931-. A. H. MOON 1,828,290

BAND TIGHTENING TOOL,

Filed Jan. 18, 1928 s Sheets-Sheet 2 IN VEN TOR.

ATTORNEY-s 06L 20, 1931. H N 1,828,290

' BAND TIGHTENING TOOL Filed Jan. 18, 192? 3 Sheets-Sheet 5 g gINVEN-TPR' YW M A TTORNEYS tool. 7

Patented Oct. 20, 1931 UNITED STATES "PATENT, OFFICE ALVA in Moon, 01mrnn nrrown, 01110, ss GNoR TO THE AMERICAN ROLLING MILL COMPANY, or,MIDDLETOWN, OHIO, A CORPORATION or 01110 BAND TIGIITECNING T001:

Application filed January is, 1928. Serial 1%. 247,733!

- My invention relates to band tightening tools and particularly to suchtools as are adaptable for use in tightening a relatively wide band suchas is required for binding together sheets of metal of great weight.

In the art for tightening bands about packages the use of bandtightening tools is old and well known. Most of these band tightenershave a cam element to hold one end of the band and another elementhaving a slot therein through which the other end of the band is to beinserted. The last named slotted element is then rotated and the bandtightened about the' package. When the desired tension is reached theband is nailed to the package and the cam released. The rotatableelement having the slot is then reversed and the curled end of the bandpulled back through the slot. With light and narrow bands such a deviceserves a useful function but when heavy, thick, metal bands or thosewhich are of considerable width are required, it becomes almostimpossible to remove the curled end of the band from the slottedelement, and much labor and time is required. A

It is the object of my invention to provide a band tightening tool whichwill have a slotted rotary element which will be quickly detachable fromthetool so that when the desired tension is achieved and the bandsecured to the package, the rotary element may be removed lengthwisefrom the curl of metal extending about it.

It is further my object to provide a slotted pin which is so shaped thatit willaccommodate a band of desired width without any base or supportfor the pin.

The above and other structural advantages to which reference will hemade during the ensuing disclosure Iaccomplish by that certaincombination and arrangement of parts of which I have shown a preferredembodiment. i

In the drawings r Figure 1 is an end perspective view of the Figure 2 isany endelevation showing the tool in use, 1

surface of the base.

Figure 3 is a perspective view of the spreader.

Figure 4 is a perspective view of the tool in use.

Figure 5 is a perspective view of a modified and simplified type of toolconsisting of a slotted pin.

Figure 6 is a diagrammatic perspective view of the pin shown in Figure 5in use with a band secured about a pack of metal sheets prior to thestart of the tightening operation.

Figure 7 is a diagrammatic side elevation of the band tightening toolshown in Figure 5 after the tool has been rotated to tighten'the band.

Figure 8 shows a side elevation of a suitable wrench for tightening thetool.

Figure 9 is a perspective view of the tool in use on a stackof sheets.

A stack of metal plates or sheets are indicated at 1. The tool indicatedin Figures 1-4 is placed on top of a wood nailing strip which rests ontop of the upper surface of the uppermost sheet. With this type of toola nailing strip, usually a two by four, as is indicated at'2, havingshort pieces of'one by four as indicated at 3 spaced thereon provid inga. clearance space'between their ends in which the tool is placed, isprovided. With such an arrangementthe tops of the nailing stripswill belevel with the 'bottom' of the split pin and the bottom of the clampingshaft so that the band will rest directly on top of the nailing stripsand extend horizontally across the stack of sheets.

The band tightening tool has a base 4 with upwardly flanged side walls 5across which the band tightening shaft and the clamping shaft extend.For clamping the end of the band a cam shaft 6 journaled in the sides 5as indicated at 7 is provided. The camshaft has a portion extendingthrough thevside 5 and a handle 8 is provided'for turning down the camshaft to firinlyclamp the end of the band between the cam shaft and theupper A worm 9 is mounted in an orifice in one of theside walls, beingourhaled as indicated at 10, and an end 11 of to rotate the drive. Theworm meshes with a worm wheel 12 mounted on a stub shaft 13. The shafthas an octa onal aperture 14 extending through it whic 1 retains anoctagonal end of the slotted shaft 15. The end of the shaft 15 oppositethe octagonal ortion is journaled'in a bushing 16 and in or er toprevent the slotted end of the shaft from pinching when under a heavload I provide a m spreader 17 having a attened portion 18 which fitswithin the shaft.

The manner in which the tool is used is as follows: The tool is placedin the space between the pieces of the nailing strips and the M stationaend of the band, as is indicated at .19, is p seed under the cam shaft.The handle is then turned to firmly clamp the fbflni' The band is thenextended around the package to be bound, and the free end which haveindicated at 20 is inserted in the slot. If the band is unusually heavyor wide the band may be placed on the upper surface of the base and theslotted shaft then inserted in place so as to embrace the band.

A, handle is then placed on the squared end of the worm shaft and theslotted shaft is rotawd to bring about a desired tens on on the band.Nails are then driven through the band to firmly secure it to thenailing strips. The slotted shaft is then removed from its mounting andwithdrawn from the curl of metal which it has formed during thetightening operation.

has 11 previously remarked, thicknew of metal and widths of bands may beapplied with my new tool which would have been impossible withtightening tools not provided with quickly removable slotted shafts.While I have shown a specific worm drive other arrangements of gears ora ratchet may be used for rotating the slotted shaft. A modificationwhich immediately We itself is the replacement of the worm with aratchet wheel and the further incorcfi [aeration of a pawl member with amounting handle for actuating the ratchet. Still further modificationswill readily occur to those skilled in the art.

- In the modification shown in Figures 5-9 w the tool is greatlysimplified, consisting in this instance of a slotted pin only.

'The tool illustrated in Figures 5-9 consiets of a single pin or shaftof suitable diameter and having a length suflicient to take a band ofany required width, plus the distance required for a wrench or lever onboth ends.

The pin indicated at 15a is slotted from one end up to within areasonable distance W of the other end to insure strength at theeloeed'end of the pin. The slot is of a Width snflicient to receive twothicknesses of band, doubled, if necessary, and enough added clearanceto permit the pin to slip over the "bands freely.

Both ends of pin are squared as indicated at 21 to receive a wrench, asis shown at 22, although a ratchet or special lever for revolving thepin may be used instead of the wrench suggested. The end of the pin onwhich the slot occurs is furnished with a spreader 17a having aflattened portion 18a which is inserted within the slot in the pin topresent springing or pinchin together when the pin is rotated and a envyload applied.

The operation of the tool is similar to that shown in the other figures.A single band 20a is placed around a pack 1a of sheet steel of anydesired width, depth or length, either crosswise or lengthwise of thepack. "The band is brought up on both sidesor ends and over the top offiller blocks 23a and 23 and the ends of the band are lapped atleast thediameter of the pin 15a and as much more; as desired. Any excess lengthof band will not interfere with the operating of the tool.

The band, after having both ends placed in the slot, is rotated ineither direction by means of a wrench or lever or an otherspecial tool.lVhen suflicient tension has been applied, the band may be nailed to theblocks 22 and 23. In the meantime tension may be held by means offastening the handles of the Wrenches or levers with which the 8 tool istightened. The handles may be held in various ways, either manually orby'ilstening to the band already under tension lay means of a chain,Wire or other special a justable holder. A place may be provdedfll toinsert a chain or holder on the crosswise cushion 22A and 2213, as shownin Figure 9 at either end of the nailing strip below the After the bandhas been securely nailed to blocks, the pin may be easily removed bypullingout lengthwise and the curled portion of the band will remainsubstantially exactly as it has been formed.

' By leaving the curled portion another fen-0P ture will be added to theutility of the device as the dismantling of the bands may be done withthe use of a similar pin or lever. The pin being inserted in the curledportion after uncurling will, with the application of the pin to eachband separately and with the winding of the band around the pin, allowthe nails to be readily removed from the cushions. This modification oftool may be used in conjunction with other methods of rm fastening thebands after tightening.

For the purpose of welding bands, an additional band, as shown diarammatioally in Figure 7 at 30, may be user. If the band is extendedcrosswise of the case, it will lie on 7 top of the pack and bend down atthe sides. The encircllng band will then be tightened as in the previouscase and welded to the additional band at both sides of'the pack whereboth of the bands lap, as at the points 31.

In the bands to be welded the curled portion of the band and thatportion extending out from the curl to the weld may be removed.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent, is

1. A band tightening tool comprising a base with sides, a slotted shaft,and a rotary driving member for said slotted shaft, said shaft beingdetachably mounted in said rotary driving member intermediate saidsides, and detachably journaled in said sides at each of its ends.

2. A band tightening tool comprising a base with sides, a slotted shaftjournaled at its ends in both of said sides, and a rotary driving memberfor said slotted shaft, said shaft being detachably mounted in saidrotary driving member intermediate said sides and being detachabletherethrough.

3. A band tightening tool comprising a base having flanged sides inwhich a clamping cam shaft and a slotted rotary shaft are journaled,said slotted rotary shaft being journaled at both ends in said flangedsides, and extending therethrough, and being quickly removable in adirection in alignment with its axis, said slot extending to an end ofsaid shaft, and spreader means in said end to prevent pinching of saidshaft.

4. A band tightening tool comprising a base having flanged sides inwhich a clamping cam shaft and a slotted rotary shaft are journaled,said slotted rotary shaft being journaled at both ends in said flangedsides and extending therethrough, and quickly removable in a directionin alignment With its axis, said slot extending to an end of said shaft,and means for preventing the collapsing of the slotted end undertension, said means comprising a spreader insertable in said end beyondthe flanged side in which said end is journaled.

5. A band tightening tool comprising a base, a slotted rotary shaftournaled at both ends in said base, means surrounding a portion of saidshaft for rotating said shaft and disengageable therefrom and a spreaderin the slotted end thereof to prevent the collapse of the shaft.

ALVA H. MOON.

